Need Help, Please Physics Homework, Final tomorrow Please

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cillaxe
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1)A 3kg heavy winter coat hangs in the middle of a clothesline causing it to sag by an angle of 5 degrees. Find the tension in the clothesline.

2). A car is traveling with a constant speed when the driver suddenly applies the brakes giving the car a deceleration of 4 m/s^2. If re car. Comes to a stop in a distance of 40 meters. What was re cars original speed?
 
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Hi, the same rules apply here. You need to show your work before others can help you. The first one is just resolving forces along the clothesline. The second one requires one of the three basic kinematics equations.